CN112553894A - Preparation method of flexible hydrophobic cotton fabric and flexible hydrophobic cotton - Google Patents
Preparation method of flexible hydrophobic cotton fabric and flexible hydrophobic cotton Download PDFInfo
- Publication number
- CN112553894A CN112553894A CN202011401947.5A CN202011401947A CN112553894A CN 112553894 A CN112553894 A CN 112553894A CN 202011401947 A CN202011401947 A CN 202011401947A CN 112553894 A CN112553894 A CN 112553894A
- Authority
- CN
- China
- Prior art keywords
- cotton fabric
- hydrophobic
- modified layer
- cotton
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/503—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms without bond between a carbon atom and a metal or a boron, silicon, selenium or tellurium atom
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/325—Amines
- D06M13/328—Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/01—Stain or soil resistance
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/50—Modified hand or grip properties; Softening compositions
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention provides a preparation method of a flexible hydrophobic cotton fabric and the flexible hydrophobic cotton, wherein the method comprises the following steps: sequentially immersing a cotton fabric in a copper ion salt solution and a gallic acid solution to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric; hydrophobic properties are obtained by reacting the GA-Cu (ii) complex modification layer with an amine, sulfur or alcohol containing molecule under basic conditions by michael addition or schiff base reaction to produce a long chain hydrocarbon species; softening the cotton fabric with hydrophobic property by using the emulsified amino silicone oil. According to the invention, the GA-Cu (II) complex modified layer is formed on the surface of the cotton fabric, so that the cotton fabric obtains hydrophobic property preliminarily, and then the GA-Cu (II) complex modified layer reacts with molecules containing amine, sulfur or alcohol to generate long-chain hydrocarbon substances, so that the surface energy of the cotton fabric is further reduced to enhance the hydrophobic property and the stain resistance of the cotton fabric; finally, the hydrophobic cotton fabric with improved texture is obtained through softening treatment so as to be convenient to use.
Description
Technical Field
The invention relates to the field of textile processing, in particular to a preparation method of a flexible hydrophobic cotton fabric and the flexible hydrophobic cotton.
Background
Cotton fabrics are widely used in daily life due to their unique softness, air permeability, warmth retention, comfort and biodegradability. In recent years, more and more researchers have attracted interest by giving the fabric self-cleaning, antibacterial, anti-pollution, water-oil separation and other functions through surface hydrophobic modification.
Many methods for preparing superhydrophobic fabrics have been developed through various methods, such as sol-gel method, chemical etching method, dip coating method, chemical bath deposition method, and chemical vapor deposition method, etc. Most of the existing methods for preparing the super-hydrophobic fabric are time-consuming and complex to operate, and most of the manufacturing methods involve the application of fluorine compounds, are easy to cause pollution and have high cost.
Disclosure of Invention
In order to solve the technical problems in the background art, in one aspect of the present invention, a method for preparing a flexible hydrophobic cotton fabric is provided, the method comprising: sequentially immersing a cotton fabric in a copper ion salt solution and a gallic acid solution to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric; hydrophobic properties are obtained by reacting the GA-Cu (ii) complex modification layer with an amine, sulfur or alcohol containing molecule under basic conditions by michael addition or schiff base reaction to produce a long chain hydrocarbon species; softening the cotton fabric with hydrophobic property by using the emulsified amino silicone oil.
In one or more embodiments, the copper ion salt solution comprises: copper sulfate solution or copper chloride solution.
In one or more embodiments, the method of making a hydrophobic cotton fabric further comprises: immersing the cotton fabric in a copper sulfate solution with the concentration of 2.5mg/ml-15mg/ml, and preserving the heat for 30min at the temperature of 70-100 ℃; or immersing the cotton fabric in copper sulfate solution with the concentration of 10mg/ml, and keeping the temperature at 80 ℃ for 30 min.
In one or more embodiments, the method of making a hydrophobic cotton fabric further comprises: immersing the cotton fabric taken out of the copper sulfate solution in a gallic acid solution with the concentration of 2mg/ml-14mg/ml so as to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric.
In one or more embodiments, the method of making a hydrophobic cotton fabric further comprises: immersing the cotton fabric taken out of the copper sulfate solution in a gallic acid solution with the concentration of 12.8mg/ml so as to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric.
In one or more embodiments, the method of making a hydrophobic cotton fabric further comprises: immersing the cotton fabric with the GA-Cu (II) complex modified layer in an octadecyl amine ethanol aqueous solution with the concentration of 2mg/ml-10mg/ml, and preserving the heat for 1h-8h at room temperature to ensure that the GA-Cu (II) complex modified layer of the cotton fabric reacts with molecules containing amine and alcohol to generate long-chain hydrocarbon substances so as to obtain the hydrophobic property; or immersing the cotton fabric with the GA-Cu (II) complex modified layer in an octadecyl amine ethanol aqueous solution with the concentration of 8mg/ml, and preserving the temperature for 4h at room temperature, so that the GA-Cu (II) complex modified layer of the cotton fabric reacts with molecules containing amine and alcohol to generate long-chain hydrocarbon substances to obtain the hydrophobic property.
In one or more embodiments, the method of making a hydrophobic cotton fabric further comprises: before immersing the cotton fabric with the GA-Cu (II) complex modified layer in an octadecyl amine ethanol water solution, washing and drying the cotton fabric with the GA-Cu (II) complex modified layer by using deionized water.
In one or more embodiments, the softening treatment of the cotton fabric with hydrophobic properties by using the emulsified amino silicone oil comprises: uniformly mixing an emulsifier and amino silicone oil according to the ratio of 1:2, and then adding 0.15 component of acetic acid and 5 components of water to obtain concentrated emulsified amino silicone oil; adding water with preset components in batches according to softening requirements to dilute the concentrated emulsified amino silicone oil to obtain a diluent; and softening the cotton fabric with hydrophobic property by using the diluent.
In one or more embodiments, the softening treatment of the cotton fabric with hydrophobic property by using the diluent comprises: adjusting the pH of the diluent to be between 5.5 and 6.0 by using acetic acid; and soaking the cotton fabric with the hydrophobic property in the diluent after the pH is adjusted for 1h-2h, taking out and drying to obtain the final cotton fabric.
In another aspect of the invention, the invention also provides a flexible hydrophobic cotton fabric, and the hydrophobic cotton fabric is prepared by the preparation method of the hydrophobic cotton fabric.
The beneficial effects of the invention include: according to the invention, the GA-Cu (II) complex modified layer is formed on the surface of the cotton fabric, so that the cotton fabric obtains hydrophobic property preliminarily, and the structure of the GA-Cu (II) complex is stable, so that the durability of the hydrophobic cotton is ensured; then, a GA-Cu (II) complex modified layer reacts with molecules containing amine, sulfur or alcohol to generate long-chain hydrocarbon substances through Michael addition or Schiff base reaction, so that the surface energy of the cotton fabric is further reduced, the hydrophobic property of the cotton fabric is enhanced, and the hydrophobic cotton fabric has better stain resistance due to lower surface energy; finally, the hydrophobic cotton fabric with improved texture is obtained through softening treatment so as to be convenient to use. In addition, the preparation method of the hydrophobic cotton has the characteristics of simple operation, low cost and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
FIG. 1 is a flow chart of a method of making hydrophobic cotton according to an embodiment of the present invention;
FIG. 2 is an infrared spectrum of cotton fabric at various stages of preparation according to an embodiment of the present invention;
FIG. 3 is a comparative schematic of the hydrophobic capacity of hydrophobic cotton of an embodiment of the present invention;
FIG. 4 is a state diagram before oil-water separation according to an embodiment of the present invention;
FIG. 5 is a state diagram after oil-water separation according to an embodiment of the present invention;
FIG. 6 is a diagram showing the hydrophobic cotton of the embodiment of the present invention before oil-water separation;
fig. 7 is a diagram showing the state of the hydrophobic cotton according to the embodiment of the present invention after oil-water separation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
The invention provides a preparation method of hydrophobic cotton, which is generally completed in three steps, wherein in the first step, a GA-Cu (II) complex modified layer is formed on the cotton fabric through the quick coordination assembly reaction of GA (gallic acid) and Cu (II) (divalent copper ions), the reaction is very quick, and the color of the cotton fabric is changed from white to light yellow; a second step of reacting the GA-Cu (ii) complex modified layer with an amine-, sulfur-or alcohol-containing molecule to produce a long-chain hydrocarbon substance by michael addition or schiff base reaction under alkaline conditions to produce a hydrophobic surface; and thirdly, softening the cotton fabric with the hydrophobic property by using the emulsified amino silicone oil.
The method comprises the following steps of (1) forming a GA-Cu (II) complex modified layer by using GA and Cu (II) in a reaction manner, wherein the GA-Cu (II) complex modified layer formed by using GA and Cu (II) is relatively stable and has relatively high reaction speed, and the cotton fabric has certain hydrophobic capacity; and then the surface of the cotton fabric is softened, so that the hydrophobic cotton is more flexible and convenient to use. The more specific preparation method of the hydrophobic cotton comprises the following steps:
FIG. 1 is a flow chart of the process for making hydrophobic cotton according to the present invention. In the example shown in fig. 1, the hydrophobic cotton preparation method comprises: step S1, immersing the cotton fabric in the copper ion salt solution and the gallic acid solution in sequence to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric; and step S2, reacting the GA-Cu (II) complex modified layer with amine, sulfur or alcohol-containing molecules to generate long-chain hydrocarbon substances through Michael addition or Schiff base reaction under alkaline conditions to obtain hydrophobic property; and step S3, softening the cotton fabric with hydrophobic property by using the emulsified amino silicone oil. . The copper ion salt solution comprises a copper sulfate solution or a copper chloride solution. The description will be made below with reference to a copper sulfate solution.
In a further embodiment, step S1 specifically includes immersing the cotton fabric in a copper sulfate solution having a concentration of 2.5mg/ml to 15mg/ml, and incubating at 70 ℃ to 100 ℃ for 30 min. The purpose of the step is to make the divalent copper ions uniformly adsorbed on the surface of the cotton fabric; the cotton fabric can be diluted by deionized water to remove redundant divalent copper ions, and ultrasonic oscillation can be assisted to ensure a better removal effect.
Further, the step S1 specifically includes immersing the cotton fabric taken out of the copper sulfate solution in a gallic acid solution with a concentration of 2mg/ml to 14mg/ml, so that a GA-Cu (ii) complex modified layer is formed on the surface of the cotton fabric. The cotton fabric has certain hydrophobic property, and the GA-Cu (II) complex structure is stable, so that the hydrophobic cotton prepared by the method has good durability.
In the embodiment of step S1, the present invention further provides a preferred embodiment, which includes: immersing the cotton fabric in a copper sulfate solution with the concentration of 10mg/ml, and preserving the heat for 30min at 80 ℃; then, the cotton fabric taken out of the copper sulfate solution is immersed in a gallic acid solution with the concentration of 12.8mg/ml, so that a GA-Cu (II) complex modified layer is formed on the surface of the cotton fabric. The preferred embodiments are presented with the objective of having hydrophobic properties as a first priority, and other combinations of preferred embodiments may be created with other objectives such as cost, etc. as a priority or consideration, and the invention is not limited in this regard. Various combinations are listed below in table 1 to illustrate the derivation of the preferred embodiment.
TABLE 1 Effect of CuSO4 concentration on the hydrophobic Properties of modified Cotton fabrics
As shown in table 1, when the concentration of the gallic acid solution was constant (specifically, 12.8mg/ml), the contact angle of the cotton fabric prepared by the step S1 with deionized water increased and then decreased as the concentration of the copper sulfate solution increased, and had the largest contact angle at the concentration of the copper sulfate solution of 10 mg/ml. As can be seen from Table 1, in another embodiment for cost savings, a copper sulfate solution concentration of 7.5mg/ml may be used. Of course, Table 1 is only made at a gallic acid solution concentration of 12.8mg/ml, and other preferred examples obtained by the same method using other gallic acid solutions are also within the protection of the present invention, and the comparison of the present invention is not limited.
Based on the above step S1 embodiment, in the specific embodiment of step S2, step S2 specifically includes immersing the cotton fabric with the GA-Cu (II) complex modified layer in an ethanol aqueous solution of octadecylamine with the concentration of 2mg/ml to 10mg/ml, and keeping the temperature at room temperature for 1h to 8h, so that the GA-Cu (II) complex modified layer of the cotton fabric reacts with molecules containing amine and alcohol to generate long-chain hydrocarbon substances to obtain hydrophobic property. The principle is that after the gallic acid and bivalent copper ion generate GA-Cu (II) complex, the free carboxyl of the gallic acid can also react with molecules containing amine, sulfur or alcohol to generate long-chain hydrocarbon substances, so that the surface energy of the hydrophobic cotton is further reduced, and the hydrophobic performance of the hydrophobic cotton is increased.
In the embodiment of step S2, the present invention also provides a preferred embodiment, which comprises immersing the cotton fabric with the GA-Cu (ii) complex modified layer in an aqueous solution of octadecyl amine alcohol with a concentration of 8mg/ml, and incubating at room temperature for 4h, so that the GA-Cu (ii) complex modified layer of the cotton fabric reacts with molecules containing amine and alcohol to generate long-chain hydrocarbon substances to obtain hydrophobic properties. The preferred embodiments are presented with the objective of providing hydrophobic properties, and other combinations of preferred embodiments may be created with the objective of priority or consideration of other objectives, such as manufacturing costs, and the invention is not limited in this regard. Various combinations are listed below in table 2 to illustrate the derivation of the preferred embodiment.
TABLE 2 Effect of octadecylamine concentration on the hydrophobic Properties of modified Cotton fabrics
In table 2, for simpler characterization of the concentration of the octadecylamine ethanol solution, the Octadecylamine (ODA) concentration was substituted. Wherein, when the concentration (12.8mg/ml) of the gallic acid solution and the concentration (10mg/ml) of the copper sulfate solution are unchanged, the contact angle of the cotton fabric prepared by the step S2 and the deionized water is increased and then decreased along with the increase of the concentration of the Octadecylamine (ODA) and the increase of the reaction time, and when the concentration of the Octadecylamine (ODA) is 8mg/ml and the reaction time is 4h, the contact angle of the prepared cotton fabric is the largest, and the hydrophobic property is the best. Of course, Table 2 is only made for the case where the concentration of gallic acid solution is 12.8mg/ml and the concentration of copper sulfate solution is 10mg/ml, and other preferred embodiments obtained by using gallic acid solution with other concentrations are also within the protection of the present invention, and the present invention is not limited thereto.
In a more complete example, the process of preparing hydrophobic cotton through steps S1 and S2 is as follows:
a piece of 5cm by 5cm pure cotton fabric was placed in a 500ml beaker, washed clean with deionized water, and then laid flat in the beaker and dried in a vacuum oven at 80 ℃. After drying, putting the washed fabric into a 500ml beaker, adding 20ml of copper sulfate solution with a certain concentration into the beaker, flatly spreading the fabric as much as possible so as to completely soak the fabric, adding 60ml of deionized water after soaking for 30min, ultrasonically shaking the fabric at room temperature until the fabric is fully diluted, adding 20ml of 12.8mg/ml gallic acid solution, ultrasonically shaking the fabric for 30min again, taking out the cotton fabric, washing the cotton fabric with a large amount of deionized water, and drying the cotton fabric in a vacuum oven at 60 ℃ to obtain the gallic acid-metal copper ion complex modified cotton fabric.
And (3) putting the dried modified cotton fabric into 80ml of octadecylamine ethanol aqueous solution with a certain concentration, and reacting for 4 hours at room temperature. And taking out the fabric, washing the fabric with ethanol and a large amount of deionized water, and drying the fabric in a vacuum oven at 60 ℃ to obtain the hydrophobic modified cotton fabric.
In a further embodiment, the modified cotton fabric obtained through steps S1 and S2 is relatively stiff and inconvenient to use; therefore, the invention also provides a softening treatment for the modified cotton fabric by adding the step S3, which comprises the following specific steps:
uniformly mixing 10 components of emulsifier and 20 components of amino silicone oil;
adding 0.15 component of acetic acid and 5 components of water, and stirring for 20-30 min;
slowly dripping 20 components of water, and stirring for 30 min;
adding 20 components of water, and stirring for 10-20min until a uniform emulsion is formed;
adding acetic acid to adjust the pH of the emulsion to 5.5-6.0;
adding 25 components of water for dilution, and stirring for 10-20min until a uniform emulsion is formed;
soaking the modified cotton fabric in the emulsion for 1-3h at room temperature
Taking out the cotton fabric, pre-drying for 2min at 80 ℃, then drying for 2min at 150 ℃, and naturally cooling to obtain the final hydrophobic cotton fabric.
Wherein, the comparison graph of the infrared spectrum of the cotton fabric with hydrophobic property obtained primarily in the step S1 and the hydrophobic cotton prepared in the step S2 is as follows:
FIG. 2 is an infrared spectrogram of cotton fabric at each preparation stage of the present invention. As shown in figure 2, after the copolymerization modification of gallic acid-copper ion complex-octadecylamine, the infrared spectrum of the cotton fabric is compared with that before the modification, and the stretching vibration absorption peak of hydroxyl at 3341cm-1 is weakened, because part of phenolic hydroxyl is consumed by the reaction of octadecylamine, so that the hydrophilic hydroxyl on the surface of the cotton fabric is greatly reduced, the surface energy is reduced, and the hydrophobicity of the material is enhanced. In FIG. 2, 2920cm-1 shows an asymmetric stretching vibration absorption peak of-CH 2-in octadecylamine, and 2856cm-1 shows a symmetric stretching vibration absorption peak of-CH 2-in octadecylamine. 1340cm-1 is the-NH-in-plane bending vibration peak of a primary or secondary amine. 1160cm-1, 1110cm-1, 1057cm-1 and 980cm-1 are the stretching vibration absorption peak of-C-O-C-, and 500cm-1 is the characteristic peak of cotton fiber. As can be seen from fig. 2, the surface energy of the hydrophobic cotton prepared through step S2 is significantly reduced compared to the hydrophobic cotton primarily obtained through step S1 and the original cotton fabric, so that the hydrophobic cotton prepared by the method of the present invention has better hydrophobicity, and in addition, the lower surface energy is also stronger in the stain resistance of the hydrophobic cotton prepared by the present invention. FIG. 3 is a comparative graph of the hydrophobic capacity of the hydrophobic cotton of the present invention. As shown in fig. 3, substances such as ink, milk or water are not easily impregnated on the hydrophobic cotton fabric of the present invention.
In addition, the invention also carries out an oil-water separation experiment of the hydrophobic cotton, and particularly, the experiment is shown in figures 4 to 7. Fig. 4 is a state diagram before oil-water separation. Wherein the water is dyed blue with a water soluble pigment (such as copper sulfate) for convenient discrimination between oil and water. FIG. 5 is a diagram showing a state after oil-water separation. FIG. 6 is a state diagram of the hydrophobic cotton of the present invention before oil-water separation. FIG. 7 is a diagram showing the state of the hydrophobic cotton of the present invention after oil-water separation. In fig. 7 water is blocked on the surface of the hydrophobic cotton fabric. And as can be seen from the results shown in fig. 5, the hydrophobic cotton of the present invention has a good oil-water separation effect.
The method comprises the steps of forming a GA-Cu (II) complex attachment layer by coordination assembly of Gallic Acid (GA) and copper sulfate (CuSO4) on the surface of cotton fabric, and then forming a hydrophobic modification layer on the surface of the cotton fabric by reaction of Octadecylamine (ODA) and carboxyl of the gallic acid. Water-oil separation research shows that the prepared hydrophobic cotton fabric has good separation capacity on oil-water mixtures such as vegetable oil/water, engine oil/water and the like, and the hydrophobic cotton fabric has excellent hydrophobic effect by reflecting from the side.
In addition, the invention also provides the hydrophobic cotton which is obtained by the preparation method described in each embodiment and has the beneficial effects of each hydrophobic cotton in each embodiment.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A method for preparing a flexible hydrophobic cotton fabric, which is characterized by comprising the following steps:
sequentially immersing a cotton fabric in a copper ion salt solution and a gallic acid solution to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric;
hydrophobic properties are obtained by reacting the GA-Cu (ii) complex modification layer with an amine, sulfur or alcohol containing molecule under basic conditions by michael addition or schiff base reaction to produce a long chain hydrocarbon species;
softening the cotton fabric with hydrophobic property by using the emulsified amino silicone oil.
2. The method for preparing a hydrophobic cotton fabric according to claim 1, wherein the copper ion salt solution comprises: copper sulfate solution or copper chloride solution.
3. The method for preparing a hydrophobic cotton fabric according to claim 2, further comprising:
immersing the cotton fabric in a copper sulfate solution with the concentration of 2.5mg/ml-15mg/ml, and preserving the heat for 30min at the temperature of 70-100 ℃; or
Immersing the cotton fabric in copper sulfate solution with the concentration of 10mg/ml, and keeping the temperature at 80 ℃ for 30 min.
4. A method for preparing a hydrophobic cotton fabric according to claim 3, wherein said method further comprises:
immersing the cotton fabric taken out of the copper sulfate solution in a gallic acid solution with the concentration of 2mg/ml-14mg/ml so as to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric.
5. A method for preparing a hydrophobic cotton fabric according to claim 3, further comprising:
immersing the cotton fabric taken out of the copper sulfate solution in a gallic acid solution with the concentration of 12.8mg/ml so as to form a GA-Cu (II) complex modified layer on the surface of the cotton fabric.
6. The method for preparing a hydrophobic cotton fabric according to claim 5, further comprising:
immersing the cotton fabric with the GA-Cu (II) complex modified layer in an octadecyl amine ethanol aqueous solution with the concentration of 2mg/ml-10mg/ml, and preserving the heat for 1h-8h at room temperature to ensure that the GA-Cu (II) complex modified layer of the cotton fabric reacts with molecules containing amine and alcohol to generate long-chain hydrocarbon substances so as to obtain the hydrophobic property; or
Immersing the cotton fabric with the GA-Cu (II) complex modified layer in an octadecyl amine ethanol water solution with the concentration of 8mg/ml, and preserving the temperature for 4h at room temperature, so that the GA-Cu (II) complex modified layer of the cotton fabric reacts with molecules containing amine and alcohol to generate long-chain hydrocarbon substances to obtain the hydrophobic property.
7. The method for preparing a hydrophobic cotton fabric according to claim 6, further comprising:
before immersing the cotton fabric with the GA-Cu (II) complex modified layer into an octadecyl amine ethanol water solution, washing and drying the cotton fabric with the GA-Cu (II) complex modified layer by using deionized water.
8. The method for preparing hydrophobic cotton fabric according to claim 1, wherein the softening treatment of the cotton fabric with hydrophobic properties by emulsified amino silicone oil comprises:
uniformly mixing an emulsifier and amino silicone oil according to the ratio of 1:2, and then adding 0.15 component of acetic acid and 5 components of water to obtain concentrated emulsified amino silicone oil;
adding water with preset components in batches according to softening requirements to dilute the concentrated emulsified amino silicone oil to obtain a diluent;
and softening the cotton fabric with hydrophobic property by using the diluent.
9. The method for preparing hydrophobic cotton fabric according to claim 8, wherein the softening treatment of the cotton fabric with hydrophobic property by using the diluent comprises the following steps:
adjusting the pH of the diluent to be between 5.5 and 6.0 by using acetic acid;
and soaking the cotton fabric with the hydrophobic property in the diluent after the pH is adjusted for 1h-2h, taking out and drying to obtain the final cotton fabric.
10. A flexible hydrophobic cotton fabric prepared by the method of preparing a hydrophobic cotton fabric according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011401947.5A CN112553894A (en) | 2020-12-04 | 2020-12-04 | Preparation method of flexible hydrophobic cotton fabric and flexible hydrophobic cotton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011401947.5A CN112553894A (en) | 2020-12-04 | 2020-12-04 | Preparation method of flexible hydrophobic cotton fabric and flexible hydrophobic cotton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112553894A true CN112553894A (en) | 2021-03-26 |
Family
ID=75048335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011401947.5A Pending CN112553894A (en) | 2020-12-04 | 2020-12-04 | Preparation method of flexible hydrophobic cotton fabric and flexible hydrophobic cotton |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112553894A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497744A (en) * | 2008-07-29 | 2009-08-05 | 浙江传化股份有限公司 | Amino silicon oil emulsion and preparation thereof |
| CN106087404A (en) * | 2016-06-03 | 2016-11-09 | 武汉纺织大学 | A kind of method that superhydrophobic fabric is prepared in polyphenol modification |
| CN109675445A (en) * | 2019-02-11 | 2019-04-26 | 刘云晖 | A kind of preparation method of the oil-water separation mesh film of the super-hydrophobic super-oleophylic based on tannic acid modification |
| CN111925555A (en) * | 2020-08-10 | 2020-11-13 | 南通大学 | Method for constructing super-hydrophobic coating based on metal coordination complex |
-
2020
- 2020-12-04 CN CN202011401947.5A patent/CN112553894A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497744A (en) * | 2008-07-29 | 2009-08-05 | 浙江传化股份有限公司 | Amino silicon oil emulsion and preparation thereof |
| CN106087404A (en) * | 2016-06-03 | 2016-11-09 | 武汉纺织大学 | A kind of method that superhydrophobic fabric is prepared in polyphenol modification |
| CN109675445A (en) * | 2019-02-11 | 2019-04-26 | 刘云晖 | A kind of preparation method of the oil-water separation mesh film of the super-hydrophobic super-oleophylic based on tannic acid modification |
| CN111925555A (en) * | 2020-08-10 | 2020-11-13 | 南通大学 | Method for constructing super-hydrophobic coating based on metal coordination complex |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110714325B (en) | Nano silicon dioxide-fluorine-free super-hydrophobic finishing agent and preparation method and application thereof | |
| CN106422421B (en) | A kind of method and application of paper modification preparation water-oil separationg film | |
| CN113832732B (en) | Preparation method of stable perfluorohexyl functionalized active POSS (polyhedral oligomeric silsesquioxane) -based super-amphiphobic coating modified cotton fabric | |
| CN112323490B (en) | Method for carrying out super-hydrophobic modification on waste cotton fabric by polyphenol | |
| CN105126647B (en) | A kind of high efficiency oil-water separates the preparation method of composite hyperfiltration membrane | |
| CN112064363B (en) | Preparation method of polyaniline/MXene composite fabric and application of polyaniline/MXene composite fabric in printing and dyeing wastewater treatment | |
| CN112962311B (en) | POSS (polyhedral oligomeric silsesquioxane) -based sulfhydryl-alkene click chemistry method for preparing super-hydrophobic textile | |
| CN109736082A (en) | A kind of super-hydrophobic anti-ultraviolet flame-retardant silk fabric and preparation method thereof | |
| CN110172831B (en) | Hydrophilic after-finishing method for fabric | |
| CN110158307B (en) | Preparation method of hydrophilic anti-ultraviolet fabric finishing agent | |
| CN112900076A (en) | Multifunctional polyester fiber and preparation method thereof | |
| CN112553894A (en) | Preparation method of flexible hydrophobic cotton fabric and flexible hydrophobic cotton | |
| CN112813683A (en) | Super-amphiphobic fabric and preparation method thereof | |
| KR101125163B1 (en) | Method for Preparing Superhydrophobic Polyethylene terephthalate Fabric Using Nano Silica Particle and Water-repellent Agent | |
| CN111207974A (en) | Pretreatment method and preparation method of anti-drop glass slide | |
| CN112267298A (en) | Preparation method of hydrophobic cotton fabric and hydrophobic cotton | |
| CN109440443B (en) | Preparation method of super-hydrophobic fabric | |
| CN111871002A (en) | Super-hydrophobic cotton yarn material for oil-water separation and preparation method and application thereof | |
| CN105714552B (en) | A kind of preparation method of copper sulfide/terylene composite conducting fiber | |
| CN110117901A (en) | A kind of afterfinish method of fabric | |
| CN115094627B (en) | Preparation method of durable hydrophobic polyester fiber product | |
| CN108970425B (en) | Polymer membrane for high-salinity wastewater treatment and preparation method thereof | |
| CN109208356B (en) | Method for grafting and modifying cyclodextrin on surface of silk fabric and application | |
| CN105217967A (en) | A kind of formation method of glass antifogging anti coating | |
| TW202142758A (en) | Auxiliary for dyeing, manufacturing method thereof and dyeing process using the same capable of increasing the dyeing rate of the fabric during the dyeing process and reducing the dye residual rate in the subsequent produced wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |
|
| RJ01 | Rejection of invention patent application after publication |